Home Postcodes by state VIC 3618 Postcode 3618 3618 is the postcode for Merrigum, VIC. Localities with postcode 3618MerrigumVIC Postcode 3618 State or territory Victoria (VIC) Localities 1 Council area Greater Shepparton Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 3617 · Postcode 3620